Capcont M
For capacitive fill level supervision in liquids and solid materials
- For liquids and bulks
- Simple installation and setup
- Corrosion-resistant
Description
The devices of the series Capcont M with integrated evaluation electronic are compact fill level limit switches for supervision of fill levels in liquids and solid materials in containers or pipelins at process temperatures from -30°C to +125°C and process pressures from -1 up to 10 bar.
The device is suitable for limit value detection or also as dry run protection in liquids and viscous substances but also in powdery and fine-grained materials, like e.g. grain, flour, powdered milk, mixing food, cement, chalk or gypsum. It can be used in electrically conductive as well as non-conductive materials.
Function
The fill level limit switch Capcont M is a capacitive operating sensor with limit value detection.
Electroden rod, filling material and container wall realizes an electrical capacitor. A fill material changing causes a capacity change that is evaluated by the electronic and is converted into a corresponding switching reaction. At transgression or underrun of the limit value a switching signal at the PNP switching output is created. This allows a control of relays, contractors, magnetic valves, light signaling units, horn as well as SPS inputs. A plugable yellow LED indicates an active PNP switching output.
A possibility for change over the minimum / maximum safety is integrated. The Die adjustment of the reaction sensivity is made by a potentiometer.
| Auxiliary power | |
|---|---|
| Supply voltage | 10 V… 35 V DC (protected against polarity reversal) |
| Residual ripple | ≤ 2 VSS (only within the permissible voltage limits) |
| Current consumption | ≤ 10mA switching outputs in idle mode |
| Isolation voltage | 75 V DC |
| Switching output | |
|---|---|
| Function | PNP-switching on +Vs, principle (NO/NC) invertible via jumper |
| Output voltage | VS1 ≥ +Vs – 2V |
| Output current | ≤ 250mA current-limited, shortcircuit proof |
| Rise time | ≤ 30µs RL ≤ 3000 Ω IL ≥ 4,5mA |
| Delay time | ≤ 200ms ≥ 50Hz |
| Switching cycles | ≥ 100.000.000 |
| Switching hysteresis | depends on the media |
| Sensitivity adjustment | multi-start trimmer |
| Materials | |
|---|---|
| Rod isolation (medium contact) |
PTFE – polytetrafluoroethylene (Teflon®) |
| Process connection (medium contact) |
Steel 1.4404 (AISI 316L) Steel 1.4571 (AISI 316Ti) |
| Connection housing | die-cast aluminium housing in powder-coated finish |
| Cable screw connection | brass nickel-plated screw sealing CR / NBR |
| Sealing (medium contact) |
medium-contact FPM – fluorelastomer (Viton®) EPDM – Etylen-P |
